I played this in a group of five at Tier 1-2, and everyone enjoyed the flavor of the setting and how the writer incorporated that into the skill encounters. Fantastic stuff.
The combats, however, were a letdown.
Spoiler:
Three combats were against solo creatures. Two of those solos were spellcasters. Once we got past the initial barrage, the spellcasters went down fast. The other solo was on a very constrictive map, so only two characters could attack at a time.